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Encapsulates a source of characters. More...
#include <TextProvider.h>
Public Member Functions | |
| TextProvider (const llvm::sys::Path &path) | |
| Construct a TextProvider over the given file. | |
| TextProvider (const char *buffer, size_t size) | |
| Construct a TextProvider over the given buffer. | |
| TextProvider (const std::string &string) | |
| Construct a TextProvider over the given string. The contents of the string are copied. | |
| ~TextProvider () | |
| std::string | getIdentity () const |
| Returns a string identifying this TextProvider. | |
| Location | getLocation (const TextIterator &ti) const |
| Returns the Location object corresponding to the position of the supplied TextIterator. | |
| SourceLocation | getSourceLocation (const TextIterator &ti) const |
| Returns a SourceLocation object corresponding to the position of the supplied iterator. | |
| SourceLocation | getSourceLocation (const Location loc) const |
| Returns a SourceLocation object corresponding to the given raw Location. | |
| unsigned | getLine (Location) const |
| Returns the line number associated with the given Location object. | |
| unsigned | getColumn (Location) const |
| Returns the column number associated with the given Location. | |
| unsigned | getLine (const TextIterator &ti) const |
| Returns the line number associated with the given TextIterator. | |
| unsigned | getColumn (const TextIterator &ti) const |
| Returns the column number associated with the given TextIterator. | |
| TextIterator | begin () const |
| Returns an iterator corresponding to the start of this TextProviders character data. | |
| TextIterator | end () const |
| Returns a sentinel iterator. | |
| std::string | extract (Location start, Location end) const |
| Provides access to a range of text. | |
| std::string | extract (const TextIterator &iter, const TextIterator &endIter) const |
| Provides access to a range of text. | |
| std::string | extract (const SourceLocation &sloc) const |
| Returns a string corresponding to the line of text containing the given SourceLocation. | |
| unsigned | extract (const TextIterator &iter, const TextIterator &endIter, char *buffer, size_t size) const |
| Extracts a range of text into a buffer. | |
Friends | |
| class | TextIterator |
Encapsulates a source of characters.
The principle purpose of this class is to manage a source of character data. The source of the data may be a file or a raw buffer. Mechanisms are provided to iterate over the underlying characters, retrieve location information in the form of line/column coordinates, and to extract ranges of text.
Currently, lines are numbered beginning at 1 and columns are numbered beginning at 0. This is the conventional system used by Emacs. Adding additional indexing strategies should be straight forward to implement.
Definition at line 102 of file TextProvider.h.
| TextProvider::TextProvider | ( | const llvm::sys::Path & | path | ) |
Construct a TextProvider over the given file.
Initializes a TextProvider to manage the contents of the given file. The provided path must name a readable text file, or if the path specifies a file name "-", then read from all of stdin instead. If the path is invalid, this constructor will simply call abort.
| path | The file used to back this TextProvider. |
Definition at line 17 of file TextProvider.cpp.
| TextProvider::TextProvider | ( | const char * | buffer, | |
| size_t | size | |||
| ) |
Construct a TextProvider over the given buffer.
Initializes a TextProvider to manage the contents of the given region of memory. The contents of the buffer are copied -- the TextProvider does not take ownership of the memory region.
| buffer | Pointer to the start of the memory region. | |
| size | The size in bytes of the memory region. |
Definition at line 36 of file TextProvider.cpp.
| TextProvider::TextProvider | ( | const std::string & | string | ) |
Construct a TextProvider over the given string. The contents of the string are copied.
| string | The string used to back this TextProvider. |
Definition at line 43 of file TextProvider.cpp.
| TextProvider::~TextProvider | ( | ) |
Definition at line 52 of file TextProvider.cpp.
| TextIterator TextProvider::begin | ( | ) | const |
Returns an iterator corresponding to the start of this TextProviders character data.
Definition at line 76 of file TextProvider.cpp.
| TextIterator TextProvider::end | ( | ) | const |
Returns a sentinel iterator.
Definition at line 81 of file TextProvider.cpp.
| unsigned TextProvider::extract | ( | const TextIterator & | iter, | |
| const TextIterator & | endIter, | |||
| char * | buffer, | |||
| size_t | size | |||
| ) | const |
Extracts a range of text into a buffer.
Places the range of text delimited by the given pair of iterators into the given buffer.
| iter | The position of the first character to be extracted. | |
| endIter | The position of one past the last character to be extracted. | |
| buffer | A pointer to a region of memory to be filled with character data. If this is the NULL pointer, then no data is written and this function returns the number of characters which would have been written assuming a large enough buffer was provided. | |
| size | The number of characters which the supplied buffer can accommodate. If the size is smaller than the number of characters which the iterators delimit, then only size characters are written. |
Definition at line 119 of file TextProvider.cpp.
| std::string TextProvider::extract | ( | const SourceLocation & | sloc | ) | const |
Returns a string corresponding to the line of text containing the given SourceLocation.
| sloc | The location of the line of text to extract. |
Definition at line 106 of file TextProvider.cpp.
| std::string TextProvider::extract | ( | const TextIterator & | iter, | |
| const TextIterator & | endIter | |||
| ) | const |
Provides access to a range of text.
Returns a string corresponding the the range of text starting at the position of iter and ending just before the position of endIter.
| iter | The position of the first character to be extracted. | |
| endIter | The position of one past the last character to be extracted. |
Definition at line 97 of file TextProvider.cpp.
Provides access to a range of text.
Returns a string corresponding to the range of text starting at location start and ends at location end. The range of text returned includes both of its end points.
| start | The location of the first character to be extracted. | |
| end | The location of the last character to be extracted. |
Definition at line 86 of file TextProvider.cpp.
| unsigned comma::TextProvider::getColumn | ( | const TextIterator & | ti | ) | const [inline] |
Returns the column number associated with the given TextIterator.
Definition at line 173 of file TextProvider.h.
| unsigned TextProvider::getColumn | ( | Location | loc | ) | const |
Returns the column number associated with the given Location.
Definition at line 208 of file TextProvider.cpp.
| std::string comma::TextProvider::getIdentity | ( | ) | const [inline] |
Returns a string identifying this TextProvider.
The string is typically the name of the underlying file, or "<stdin>" if the provider has obtained its input from the standard input stream. This string may be empty for providers which were constructed over raw memory buffers.
Definition at line 140 of file TextProvider.h.
| unsigned comma::TextProvider::getLine | ( | const TextIterator & | ti | ) | const [inline] |
Returns the line number associated with the given TextIterator.
Definition at line 168 of file TextProvider.h.
| unsigned TextProvider::getLine | ( | Location | loc | ) | const |
Returns the line number associated with the given Location object.
Definition at line 143 of file TextProvider.cpp.
| Location TextProvider::getLocation | ( | const TextIterator & | ti | ) | const |
Returns the Location object corresponding to the position of the supplied TextIterator.
| ti | The iterator we need a location for. |
Definition at line 57 of file TextProvider.cpp.
| SourceLocation TextProvider::getSourceLocation | ( | const Location | loc | ) | const |
Returns a SourceLocation object corresponding to the given raw Location.
Definition at line 69 of file TextProvider.cpp.
| SourceLocation TextProvider::getSourceLocation | ( | const TextIterator & | ti | ) | const |
Returns a SourceLocation object corresponding to the position of the supplied iterator.
Definition at line 62 of file TextProvider.cpp.
friend class TextIterator [friend] |
Definition at line 240 of file TextProvider.h.
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